@color: #0000ff;

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    transition: all 1500ms ease-in-out;
    background: @color;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: #ffffff;
    font-weight: 700;
    font-size: 25px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#app {
    transition: all 1500ms ease-in-out;
    background: #ffffff;
    width: 50vw;
    height: 50vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #3f18eb;
    flex-direction: column;
    font-weight: 700;
    font-size: 25px;
    border-radius: 10pt;
    /* font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; */
}

.nav {
    transition: all 1500ms ease-in-out;
    width: 100vw;
    height: 10vh;
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: #ffffff;
    color: #3f18eb;
    font-weight: 700;
    font-size: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    list-style: none;
}

.nav li {
    transition: background-color 700ms ease-in-out, color 700ms ease-in-out, font-size 700ms ease-in-out;
    display: inline-flex;
    width: 25%;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #3f18eb;
    font-weight: 700;
    font-size: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    cursor: pointer;
    height: 10vh;
}

.nav a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    color: #3f18eb;
    text-decoration: none;
    transition: color 700ms ease-in-out, font-size 700ms ease-in-out;
}

.nav li:hover {
    background: #3f18eb;
    color: #ffffff;
    font-size: 25px;
}

.nav li:hover a {
    color: #ffffff;
    font-size: 25px;
}

@media screen and (max-width: 480px) {
    body {
        transition: all 1500ms ease-in-out;
        flex-direction: column;
        display: flex;
        justify-content: space-around;
        align-items: center;
        width: 100vw;
        height: 100vh;
    }

    .nav {
        transition: all 1500ms ease-in-out;
        // flex-direction: column;
        height: auto;
    }

    .nav li {
        width: 100%;
        height: 10vh;
    }

    #app {
        transition: all 1500ms ease-in-out;
        width: 100%;
        height: auto;
    }
    .timer{
        transition: all 1500ms ease-in-out;
        width: 100vw;
        height: 10vh;
        display: flex;
        justify-content: center;
        align-items: center;
        background: #ffffff;
        color: #3f18eb;
        filter:drop-shadow( 0px 0px 10px #0fd1cb) ;

    }
    #timer{
        transition: all 1500ms ease-in-out;
        width: 100vw;
        height: 10vh;
        display: flex;
        justify-content: center;
        align-items: center;
        background: linear-gradient(to right, #18e4eb,#b60ae6,  #18e4eb);
        color: #3f18eb;
        font-size: 20px;
        text-align: center;
        animation: timer 3s linear infinite;
        background-size: 200% ;
   
    }
    #timer:hover{
        transition: all 1500ms ease-in-out;
        width: 100vw;
        height: 10vh;
        display: flex;
        justify-content: center;
        align-items: center;
        // background: linear-gradient(to right, #3f18eb,#adb81c, #39bae9);
        color: #18d2eb;
        animation: timer 3s linear infinite;
        cursor: pointer;
        filter: blur(0rem);
    }
}
@keyframes timer{
    0%{
        background-position-x:200% ;
    }
}
